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TPS2HB16-Q1: Paralleling outputs possible?

Harald Andreesen
Prodigy 20 points
Part Number: TPS2HB16-Q1

Lets say I design a IO-device with TPS2HB16 outputs and the current limit is set to e.g. 5A. The current limit is chosen to cover 99% of all thinkable applications. The 1% exception would demand a higher current like e.g. 7A. Is it possible to parallel TPS2HB16 outputs (from the same die) at the connector side to achieve a higher current limit? Of course both switches would be activated exactly the same time. Would the current balance due to the characteristic of the internal MOSFET? 

  • 0
    TI__Genius 12410 points

    Hello,

    Yes in theory you can parallel the channels. However the current limit that you set will be doubled.

    However we have a TPS1HB08 that can drive the 7A load with a single channel.

  • 0 in reply to Cameron Phillips
    Prodigy 20 points

    Dear Cameron,

    Thanks a lot for your quick answer! You are right, I could choose another switch. The problem is that the output could be used for different applications, not exactly known at design time. Secondly, the connector has a current limit. So the only chance is to set a current limit that is valid for most scenarios. Paralleling two outputs would be the "backdoor" to cover rare applications.

    But I will setup a demo and try this!